LR Question 16 Explanation, by LSATHacks
QUESTION TEXT: Evidently, watching too much television can lead …
QUESTION TYPE: Weaken
CONCLUSION: TV makes people overestimate risk.
REASONING: There is a correlation between how much TV someone watches and how likely they think they are to suffer from a natural disaster.
ANALYSIS: Repeat after me: correlation does not equal causation. Correlation does not equal causation. Correlation does not equal causation.
Anytime two things happen together, that’s just a correlation. In this stimulus, we have two things happening together: TV watching, and fear of natural disaster. Here are the four possibilities:
- TV causes fear
- Fear causes more TV watching
- A third factor (e.g. living in a certain area) causes both fear of disaster and TV watching.
- It’s just a coincidence
You can weaken an attempt to draw causation from correlation by showing that one of the alternate possibilities is true. In this situation, it’s also possible that TV watchers are the ones with a correct view of the risk of natural disaster, and therefore TV isn’t misleading.
___________
- So? This doesn’t show that TV doesn’t cause fear.
- This heightens the tension. The people who watch the most TV have the greatest fear of natural disasters AND live in the regions with the fewest disasters.
- Tempting, but this is talking about the wrong group. If this answer had said that people who watch more TV have an accurate view, then that would weaken the idea that TV misleads.
- This shows that Television isn’t responsible for educating people about natural disasters. So this answer doesn’t weaken the idea that TV is a bad influence.
- CORRECT. This is number three from my list above. A third factor (risky location) leads people to watch lots of television, and to have an above average estimation of natural disaster risk.
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#help
I can not eliminate A the same way. One of the ways to weaken a causal relationship is to show that when the cause doesn’t occur, the effect still does.
Answer choice A shows that (regardless of the amount of television they watch) so we can consider 0 television time, the effect (overestimate danger) still occurs.
Doesn’t this weaken the argument? Any help is much appreciated.
You’re right that when it comes to causal reasoning, if we can demonstrate that the effect is there when the cause isn’t, we’ve weakened the reasoning. However, this answer choice is vague, we don’t know exactly what percentage of this “many” are people who don’t watch an above-average amount of TV. We also don’t know what number “many” even refers to. So, at best, it weakens the argument in an extremely minor way.
(E), on the other hand, provides a very clear alternative explanation for the phenomenon in the stimulus. We’re looking for the answer choice that is the best of the five, and (E) lacks the vagueness of (A).